Sri Lankan Situation

Dengue is an important vector-borne disease in Sri Lanka. First serologically confirmed case was reported in 1962 and the first documented dengue outbreak occurred in 1965- 1966, with few sporadic cases of haemorrhagic disease. According to the studies conducted at Medical Research Institute, there had being continued dengue transmission in 1970s and 1980s with periodic epidemics, without significant numbers of dengue haemorrhagic fever and dengue shock syndrome. These studies showed that during 1980 and 1985, 14% to 24% of viral syndrome cases being caused by dengue infection and all four dengue serotypes were circulated with the predominance of DEN- 2 and DEN- 3.Sri Lanka experienced first epidemic of Dengue Haemorrhagic fever / Dengue Shock Syndrome caused by DEN- 3 sero type in 1989 – 1990. It has been suggested that a genetic change occurred in the DEN -3 virus increasing its epidemic potential/virulence may have contributed to emergence of DHF/DSS after many years of its circulation. Since then progressively larger epidemics with more severe and fatal DHF/DSS have occurred at regular intervals.

DF/DHF became a notifiable disease since 1996 in Sri Lanka.

Following are the number of cases reported since 2002.

Year

Cases

2002

8 931

2003

4 672

2004

15 463

2005

5 994

2006

11 980

2007

7 332

2008

6 607

2009

35 095

2010

34 105

2011

28 140

2012

44 456

2013

32 063

2014

47 502

2015

29 777

2016

55 150

Trend and Case fatality ratio Upto 2012

Temporal Spread

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_1996gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_1997gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_1998gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_1999gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2000gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2001gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2002gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2003gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2004gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2005gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2006gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2007gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2008gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2009gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2010gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2011gk-is-189.pnglink

http://203.143.20.230/dengue.health.gov.lk/public_html/modules/mod_image_show_gk4/cache/Cases by RDHS_2012gk-is-189.pnglink